doc/filters: fix afftfilt example

Signed-off-by: Paul B Mahol <onemda@gmail.com>
9 years ago · 73c938dd9f
parent fa04ec728d
commit 73c938dd9f
1 changed files with 2 additions and 2 deletions
--- a/doc/filters.texi
+++ b/doc/filters.texi
@ -804,9 +804,9 @@ window function will be picked. Default is @code{0.75}.

@itemize
@item
-Increase first 50 bins by 0.1 and lower all other frequencies by factor of 10:
+Leave almost only low frequencies in audio:
@example
-afftfilt="1.1*between(b\,0\,49)+0.1*between(b\,50\,f)"
+afftfilt="1-clip((b/nb)*b,0,1)"
@end example
@end itemize